My Son is an over friendly child who prefer strangers than own family including me, my husband and my parents. If a stranger carries him or played with him, he would cry if the person leaves or if we try to carry him back, he is not afraid of us being away. What should i do?

Explain to your toddler firmly, Children may not know the consequences of interacting with the 'wrong' strangers. Tell him, never talk to others when mummy or daddy isn't with you. When it's time to go, just carry and leave. Be nice and say, lets say byebye to auntie/uncle, And just walk off. Children adapts fast. Don't give in to their whiny and crying.